LCM of 12 and 24
LCM of 12 and 24 is the smallest number among all common multiples of 12 and 24. The first few multiples of 12 and 24 are (12, 24, 36, 48, 60, 72, . . . ) and (24, 48, 72, 96, 120, 144, 168, . . . ) respectively. There are 3 commonly used methods to find LCM of 12 and 24  by prime factorization, by division method, and by listing multiples.
1.  LCM of 12 and 24 
2.  List of Methods 
3.  Solved Examples 
4.  FAQs 
What is the LCM of 12 and 24?
Answer: LCM of 12 and 24 is 24.
Explanation:
The LCM of two nonzero integers, x(12) and y(24), is the smallest positive integer m(24) that is divisible by both x(12) and y(24) without any remainder.
Methods to Find LCM of 12 and 24
The methods to find the LCM of 12 and 24 are explained below.
 By Division Method
 By Listing Multiples
 By Prime Factorization Method
LCM of 12 and 24 by Division Method
To calculate the LCM of 12 and 24 by the division method, we will divide the numbers(12, 24) by their prime factors (preferably common). The product of these divisors gives the LCM of 12 and 24.
 Step 1: Find the smallest prime number that is a factor of at least one of the numbers, 12 and 24. Write this prime number(2) on the left of the given numbers(12 and 24), separated as per the ladder arrangement.
 Step 2: If any of the given numbers (12, 24) is a multiple of 2, divide it by 2 and write the quotient below it. Bring down any number that is not divisible by the prime number.
 Step 3: Continue the steps until only 1s are left in the last row.
The LCM of 12 and 24 is the product of all prime numbers on the left, i.e. LCM(12, 24) by division method = 2 × 2 × 2 × 3 = 24.
LCM of 12 and 24 by Listing Multiples
To calculate the LCM of 12 and 24 by listing out the common multiples, we can follow the given below steps:
 Step 1: List a few multiples of 12 (12, 24, 36, 48, 60, 72, . . . ) and 24 (24, 48, 72, 96, 120, 144, 168, . . . . )
 Step 2: The common multiples from the multiples of 12 and 24 are 24, 48, . . .
 Step 3: The smallest common multiple of 12 and 24 is 24.
∴ The least common multiple of 12 and 24 = 24.
LCM of 12 and 24 by Prime Factorization
Prime factorization of 12 and 24 is (2 × 2 × 3) = 2^{2} × 3^{1} and (2 × 2 × 2 × 3) = 2^{3} × 3^{1} respectively. LCM of 12 and 24 can be obtained by multiplying prime factors raised to their respective highest power, i.e. 2^{3} × 3^{1} = 24.
Hence, the LCM of 12 and 24 by prime factorization is 24.
☛ Also Check:
 LCM of 125 and 175  875
 LCM of 120 and 90  360
 LCM of 120 and 180  360
 LCM of 120 and 160  480
 LCM of 120 and 150  600
 LCM of 120 and 144  720
 LCM of 12 and 60  60
LCM of 12 and 24 Examples

Example 1: The GCD and LCM of two numbers are 12 and 24 respectively. If one number is 12, find the other number.
Solution:
Let the other number be z.
∵ GCD × LCM = 12 × z
⇒ z = (GCD × LCM)/12
⇒ z = (12 × 24)/12
⇒ z = 24
Therefore, the other number is 24. 
Example 2: Find the smallest number that is divisible by 12 and 24 exactly.
Solution:
The smallest number that is divisible by 12 and 24 exactly is their LCM.
⇒ Multiples of 12 and 24: Multiples of 12 = 12, 24, 36, 48, 60, . . . .
 Multiples of 24 = 24, 48, 72, 96, 120, . . . .
Therefore, the LCM of 12 and 24 is 24.

Example 3: The product of two numbers is 288. If their GCD is 12, what is their LCM?
Solution:
Given: GCD = 12
product of numbers = 288
∵ LCM × GCD = product of numbers
⇒ LCM = Product/GCD = 288/12
Therefore, the LCM is 24.
The probable combination for the given case is LCM(12, 24) = 24.
FAQs on LCM of 12 and 24
What is the LCM of 12 and 24?
The LCM of 12 and 24 is 24. To find the LCM of 12 and 24, we need to find the multiples of 12 and 24 (multiples of 12 = 12, 24, 36, 48; multiples of 24 = 24, 48, 72, 96) and choose the smallest multiple that is exactly divisible by 12 and 24, i.e., 24.
What are the Methods to Find LCM of 12 and 24?
The commonly used methods to find the LCM of 12 and 24 are:
 Listing Multiples
 Prime Factorization Method
 Division Method
What is the Relation Between GCF and LCM of 12, 24?
The following equation can be used to express the relation between GCF and LCM of 12 and 24, i.e. GCF × LCM = 12 × 24.
If the LCM of 24 and 12 is 24, Find its GCF.
LCM(24, 12) × GCF(24, 12) = 24 × 12
Since the LCM of 24 and 12 = 24
⇒ 24 × GCF(24, 12) = 288
Therefore, the greatest common factor = 288/24 = 12.
How to Find the LCM of 12 and 24 by Prime Factorization?
To find the LCM of 12 and 24 using prime factorization, we will find the prime factors, (12 = 2 × 2 × 3) and (24 = 2 × 2 × 2 × 3). LCM of 12 and 24 is the product of prime factors raised to their respective highest exponent among the numbers 12 and 24.
⇒ LCM of 12, 24 = 2^{3} × 3^{1} = 24.
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